Patent GB-190314895-A (GB)
Title: Improvements in Time Date and Consecutive Number Printing or Stamping Machines.
Inventor: THOMPSON WILLIAM PHILLIPS
Filed: 1903-07-04
Granted: 1903-08-27
Abstract: 14,895. Thompson, W. P., [Wilson, J. C.]. July 4. Platen presses; numbering-apparatus.-Relates to time, date, and consecutive-number printing machines. The clock mechanism is carried by a plate A' removably fixed in the casing A, and it is geared to the time-printing parts on the bed-plate B and to the visible clock dial L. Dating- wheels d are journalled on a hub on the bed-plate B, and are set by hand by means of the setting-device d'. A number-printing mechanism is removably fixed to the bed-plate on the side opposite to the dating-wheels. The platen E<2> is on a plunger guided in a socket E on the arm D, and is operated by the kuob E<3>. The inking-ribbon C' is carried by a holder C engaging frictionally the sides of the bed-plate. The meridian-printing part b<26> carries the two characters A, P, which are changed automatically. Fig. 7 shows the print made by the machine. The annular plate c for printing the representation of the clock dial is fixed on the bed-plate. The device for printing the minute-indicating hand is on the upper end of a shaft a, and the hour-indicator printing-device is on the upper end of a tubular shaft b concentric with the shaft a. The lower end of the shaft a is provided with a clutch, consisting of a pair of spring fingers b<7> which engage a projection on the minute shaft of the clock mechanism, so that the shaft a is driven frictionally, and, in case it is temporarily arrested by the stamping-operation &c., the clockwork continues to move. Projections b<2> on the tubular shaft b engage slots in a disc attached to the hour-wheel sleeve of the clock train. The lower end of the shaft b<1> of the meridian-printing device b<26> has projections engaging slots in a hub driven through half a revolution every twelve hours. This hub is on a spring barrel connected with a ratchet-wheel having twenty-four teeth, driven one tooth at each revolution of the hour wheel. A cam arrangement on the ratchet-wheel disengages one of two pawls which hold the spring barrel, permitting it to move from one pawl to the other every twelve hours. The platen E' is of such size that it only prints the A or the P. The gearing for connecting the clock train with the visible indicator L is carried by a plate, Fig. 15, screwed to the upper plate A<1> of the clockwork. To this plate is fixed an arm carrying a sleeve, and the dial L and hands. The minute hand is on the end of a shaft passing through the sleeve and geared by bevel gears to a wheel driven by the clockwork. A spring interposed between the wheel and the sleeve holds the wheel in gear and prevents the hands from jumping excessively, and at the same time permits of setting the hands to agree with the printing-hands. The numbering-device is of usual construction, and its units-wheel is operated at each impression by a lever H engaged by an arm H<4> fixed on a platen. The arm of the lever H operating a pawl device is a short one, while that engaging the arm H<4> is long, and easy working is obtained. The arm H<4> is slotted where it engages the end of the arm H, and the two are connected by a spring J. The end of the arm H is so shaped that it is disengaged from the arm H<4> when the units-wheel is turned one step, and is stopped by a pin M, the platen continuing its movement to make the impression.